T. Bittner, M. Donnelly, and S. Winter, Ontology and Semantic Interoperability, Large-Scale 3D Data Integration: Challenges and Opportunities, pp.139-160, 2005.
DOI : 10.1201/9781420036282.pt3

G. Hirst, Ontology and the lexicon, Handbook on Ontologies, pp.209-229, 2004.

O. Fodor and H. Werthner, Harmonise -a Step Towards an Interoperable e-Tourism Marketplace, International Journal of Electronic Commerce, 2005.

M. Dell-'erba, O. Fodor, F. Ricci, and H. Werthner, Harmonise: A Solution for Data Interoperability, Towards the Knowledge Society: eCommerce, eBusiness, and eGovernment, the Second IFIP Conference on E-Commerce, E-Business, E- Government, pp.433-445, 2002.

B. Legrand, Semantic Web Methodologies and Tools for Intra-European Sustainable Tourism. White paper, 2004.

S. Ou, V. Pekar, C. Orasan, C. Spurk, and M. Negri, Development and Alignment of a Domain-Specic Ontology for Question Answering, the Sixth International Language Resources and Evaluation Conference, pp.2221-2228, 2008.

I. Toma, C. Stanciu, A. Fensel, I. Stavrakantonakis, and D. Fensel, Improving the Online Visibility of Touristic Service Providers by Using Semantic Annotations. The Semantic Web: ESWC 2014 Satellite Events, pp.259-262, 20014.

J. Pustejovsky, B. Ingria, R. Sauri, J. Castano, J. Littman et al., The Specification Language TimeML. The Language of Time: a Reader, pp.545-557, 2005.

. Timeml, Robust Specification of Event and Temporal Expressions in Text, p.5

R. Sauri, R. Knippen, M. Verhagen, and J. Pustejovsky, Evita, Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing , HLT '05, pp.700-707, 2005.
DOI : 10.3115/1220575.1220663

R. Sauri, L. Goldberg, M. Verhagen, and J. Pustejovsky, Annotating Events in English, TimeML Annotation Guidelines, 2009.

B. Liu, Sentiment Analysis and Opinion Mining. Synthesis Lectures on Human Language Technologies, 2012.

E. Cambria, B. Schuller, Y. Xia, and C. Havasi, New Avenues in Opinion Mining and Sentiment Analysis, IEEE Intelligent Systems, vol.28, issue.2, pp.15-21, 2013.
DOI : 10.1109/MIS.2013.30

M. Malik, S. Missen, M. Attik, M. Coustaty, A. Doucet et al., SentiML ++: An Extension of the SentiML Sentiment Annotation Scheme, The 12th Extended Semantic Web Conference, 2014.

L. Robaldo and L. D. Caro, OpinionMining-ML, Computer Standards & Interfaces, vol.35, issue.5, pp.454-469, 2013.
DOI : 10.1016/j.csi.2012.10.004